Etani Hikari, known simply as Hikari, is a Japanese singer, dancer, and member of FANTASY BOYS (판타지 보이즈) and DOUBLE 0NE (더블원). Before debuting, he spent 1 year and 8 months as a trainee at KISS Entertainment/RD Company. In March 2023, he entered the MBC singing survival show "My Teenage Boy / Fantasy Boys", where he finished in 8th place, securing his spot in the project group. He made his debut in September 2023 as part of the group's first EP, "New Tomorrow". They are managed by PocketDol Studio (포켓돌스튜디오). In June 2025, the agency decided to launch a new project group combining some members of BAE173 and FANTASY BOYS. He re-debuted as part of DOUBLE 0NE with their first mini-album, "Xpert".